some of the magnetic moments will align in the opposite direction of the main magnetic field, this is known as: a.
Answers
Some of the magnetic moments will align in the opposite direction of the main magnetic field, this is known as:diamagnetic materials.
Water, wood, the majority of organic compounds, including petroleum and some polymers, as well as many metals, including copper, particularly the heavy ones with many core electrons, like mercury, gold, and bismuth, are examples of diamagnetic materials.
All materials have diamagnetism, which always contributes only weakly to the material's response to a magnetic field. However, because other types of magnetism (such ferromagnetism or paramagnetism) are so powerful, the diamagnetic contribution is typically insignificant when numerous types of magnetism are present in a material.
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Related Questions
How do the locations of frequent earthquakes help support the theory of plate tectonics?
Answers
The frequent earthquakes in certain locations support the theory of plate tectonics.
Plate tectonics is the scientific theory that explains the movement of the Earth's lithosphere. Earthquakes are caused by the movement of tectonic plates, and the locations of frequent earthquakes help to support the theory of plate tectonics.
For example, areas such as the Ring of Fire, a region around the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur, are located at the boundaries of several tectonic plates.
These boundaries are where the plates interact with one another, causing earthquakes, volcanic eruptions, and other geological events.
In addition to the Ring of Fire, other areas that experience frequent earthquakes are also located at plate boundaries.
For example, the San Andreas Fault in California marks the boundary between the Pacific Plate and the North American Plate, and earthquakes in this region are the result of the plates moving past one another.
Similarly, the Himalayan Mountains were formed as the result of the collision between the Indian Plate and the Eurasian Plate. The action of the plates pushing against one another causes frequent earthquakes in the region.
Overall, the locations of frequent earthquakes help to support the theory of plate tectonics by providing evidence of the movement and interaction of tectonic plates. Scientists use this evidence to better understand the Earth's geology and to make predictions about future earthquakes and other geological events.
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Can the sun explain global warming? ( 2 points) Suppose that the Earth has warmed up by 1 K in the last hundred years. i) How much would the solar constant have to increase to explain this? ii) Compare this to the observed fluctuation of the solar constant over the past 400 years (shown in class) For part (i), begin with the standard 'blackbody' calculation from class, that is: set α=0.30, and assume that the Earth acts as a blackbody in the infrared.
Answers
No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.
This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.
i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.
ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.
The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.
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name and describe the process that fuels the sun
Answers
Answer:
The Sun derives all its energy from a fusion cycle. In that process, tiny hydrogen molecules combine into a continuous proton-proton chain to create larger helium nuclei. The above figure illustrates the fusion of hydrogen into helium.
Explanation:
Hope this helps.
Answer:
nuclear fusion
Explanation:
In this process, small hydrogen molecules fuse together to form bigger helium nuclei in a continuous proton-proton chain.
Which statement is false regarding seismic waves? HELP FAST
A.P waves are longitudinal.
B.S waves are transverse.
C.P waves only move through solids.
D.S waves only move through solids.
Answers
What is SI system and SI unit?
Answers
Answer:
nternational System of Units (SI), French Système International d'Unités, international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960, it is abbreviated SI in all languages.
Explanation:
81.3% completeQuestionYou supervise a team of seven workers. You record the number of team members who reach their production goal each day. For the past week, you record the following data: Monday 5 team members reached their goal; Tuesday 4 team members reached their goal; Wednesday 2 team members reached their goal; Thursday 7 team members reach their goal; Friday 3 team members reached their goal. What was the average number of team members who reached their goal per day?A.4.2B.5.0C.6.6D.14.7E.21.0
Answers
Average number of team members who reached their goal per day = 4.2
Explanation:Number of team members that reached their goals on Monday = 5
Number of team members that reached their goals on Tuesday = 4
Number of team members that reached their goals on Wednesday = 2
Number of team members that reached their goals on Thursday = 7
Number of team members that reached their goals on Friday = 3
Total number of team members that reached their goals = 5 + 4 + 2 + 7 + 3
Total number of team members that reached their goals = 21
Average number of team members who reached their goal per day = 21/5
Average number of team members who reached their goal per day = 4.2
If 5x instead of 10x oculars were used in your microscope with the same objectives, what magnifications would be achieved?
Answers
The magnification is doubled when 10x oculars are used instead of 5x in our microscope with the same objectives.
When multiple lenses are lined together, the overall magnification can be calculated by multiplying the individual magnifications of each lens.
M = M1 × M2 × M3 × ... × Mn
where M is the overall magnification and M1, M2, M3, ..., Mn are the magnifications of the individual lenses.
Let M be the magnification of the objective, then the overall magnification,
when 5x ocular is used,
M1 = M × 5
M1 = 5M
when 10x ocular is used
M2 = M × 10
M2 = 10M
Therefore, the magnification is doubled when 10x ocular is used instead of 5x in our microscope with the same objectives.
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Which type of air mass forms over the ocean near the equator?
A
moist and warm
B
moist and cool
C
dry and warm
D
dry and cool
Answers
Answer:
a
Explanation:
A molecule makes a transition from the l=1 to the l=0 rotational energy state. When the wavelength of the emitted photon is 1.0×10 −3
m, find the moment of inertia of the molecule in the unit of kg m 2
.
Answers
The moment of inertia of the molecule in the unit of kg m2 is 1.6 × 10-46.
The energy difference between rotational energy states is given by
ΔE = h² / 8π²I [(l + 1)² - l²] = h² / 8π²I (2l + 1)
For l = 1 and l = 0,ΔE = 3h² / 32π²I = hc/λ
Where h is the Planck constant, c is the speed of light and λ is the wavelength of the emitted photon.
I = h / 8π²c
ΔEλ = h / 8π²c (3h² / 32π²I )λ = 3h / 256π³cI = 3h / 256π³cλI = (3 × 6.626 × 10-34)/(256 × (3.1416)³ × (3 × 108))(1.0×10 −3 )I = 1.6 × 10-46 kg m2
Hence, the moment of inertia of the molecule in the unit of kg m2 is 1.6 × 10-46.
Answer: 1.6 × 10-46
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the lunch lady pushes a 100kg zombie with 300 n of force . how much is the zombie accelarted
Answers
The zombie accelerated at 3m/s2.
What is acceleration?Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing. Acceleration is a change in motion; slowing down, speeding up, or changing direction even if speed doesn't change.
From the question;
F = ma
where F = applied force
m = mass
a = acceleration
300N = 100kg x a
a = 300N/100kg
a = 3m/s2.
Hence, the zombie has an acceleration of 3m/s2 when a force of 300N was applied to it.
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Please help me !! look at the image .
Answers
Answer:
B, D, A, C
Have a great day!
What name is given to the force on an object caused by Earth's gravitational pull?
Answers
Answer:
gravity
Explanation:
Design of a single non-inverting op-amp amplifier with a voltage gain of 25 dB.
i. Draw the circuit schematic and calculate possible resistor values.
ii. If an input signal with a frequency of 100 kHz, a peak to peak voltage of 200 mV and a DC offset of 1 V should be applied to this amplifier, calculate the minimum gain-bandwidth product, and the minimum slew rate of the op-amp (assume the supply voltage to be sufficiently large).
Answers
```
+Vin -----R1-----+--------- Output
|
-Vin ---R2-----| |
|
Rf
|
-Vcc
```
To design a non-inverting op-amp amplifier with a voltage gain of 25 dB, we can use the following formula:
Voltage Gain (Av) = 1 + (Rf/R1)
Since the desired voltage gain is 25 dB, we can convert it to a linear gain as follows:
Av (linear) = 10^(25/20) = 18.7
Now, let's assume a value for R1. We can choose a common value, such as R1 = 10 kΩ.
Substituting the values into the voltage gain formula, we can solve for Rf:
18.7 = 1 + (Rf/10kΩ)
Rf = 18.7 * 10kΩ - 10kΩ = 187kΩ - 10kΩ = 177kΩ
Therefore, we can use R1 = 10 kΩ and Rf = 177 kΩ for the desired voltage gain of 25 dB.
For the input signal with a frequency of 100 kHz, a peak-to-peak voltage of 200 mV, and a DC offset of 1 V, the op-amp needs to have a gain-bandwidth product (GBW) and slew rate (SR) that can handle the signal faithfully without distortion.
The minimum gain-bandwidth product can be calculated using the formula:
GBW = Av * f
Where Av is the voltage gain and f is the frequency.
GBW = 18.7 * 100 kHz = 1.87 MHz
So, the minimum gain-bandwidth product required is 1.87 MHz.
The minimum slew rate (SR) can be calculated using the formula:
SR = 2π * f * Vpp
Where f is the frequency and Vpp is the peak-to-peak voltage.
SR = 2π * 100 kHz * 200 mV = 125.66 V/μs
Therefore, the minimum slew rate required is 125.66 V/μs.
To design a non-inverting op-amp amplifier with a voltage gain of 25 dB, we can use resistor values of R1 = 10 kΩ and Rf = 177 kΩ. The op-amp should have a minimum gain-bandwidth product of 1.87 MHz and a minimum slew rate of 125.66 V/μs to handle an input signal with a frequency of 100 kHz, a peak-to-peak voltage of 200 mV, and a DC offset of 1 V.
In which dimensions do we find the components of acceleration (tangent and normal vector)?
Let's say, I am skiing first uphill and then downhill, then up a ramp, land, and finally make a turn of 90 degrees to the right and stop with an acceleration of \(\vec {a}\), which is variable in all cases. In which directions would the normal and tangential components exist, and how will they change for all the cases, considering my acceleration in a 3D plane? Please explain with a graph if you could
Answers
The acceleration of an object can be split into two components: the tangential and normal components. The tangential component points along the direction of motion and is responsible for changing the speed of the object. The normal component is perpendicular to the direction of motion and is responsible for changing the direction of motion.
In your skiing example, the direction of your acceleration will change as you move uphill, downhill, up a ramp, and make a turn. Therefore, the tangential and normal components of your acceleration will also change in direction and magnitude.
As you ski uphill, your acceleration will be pointing in the opposite direction of your motion, resulting in a negative tangential acceleration. Since your motion is mostly vertical, your normal acceleration will be pointing upwards.
As you ski downhill, your acceleration will be in the same direction as your motion, resulting in a positive tangential acceleration. Your normal acceleration will still be pointing upwards.
When you go up a ramp, your acceleration will be a combination of tangential and normal components. The tangential component will be pointing upwards to match your velocity, and the normal component will be pointing perpendicular to the ramp.
When you land, your acceleration will be mostly normal, as you decelerate your downward motion and start to move horizontally.
Finally, when you make a turn, your tangential acceleration will be pointing in the direction of the turn, while your normal acceleration will be perpendicular to the turn.
Overall, the direction and magnitude of the tangential and normal components of your acceleration will depend on the direction and magnitude of your velocity and the curvature of your path.
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10. A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant before it hits the ground?
Answers
Explain how the law of conservation of energy applied to the energy transformations that occur from the outlet charger to the ringing phone
Answers
Answer: ELECTRICAL ENERGY to CHEMICAL ENERGY to SOUND ENERGY.
Explanation:
There are laws governing the conservation of energy in physics. The first law of thermodynamics states that in a closed system, energy can neither be created nor destroyed during transformation. With this, the total energy of a given system always remains constant.
This first law of thermodynamics which arouse from special relativity, says that changes in the energy of systems will also coincide with changes in a measure of its energy content.
The ELECTRICAL energy from the outlet charger is transformed and stored as CHEMICAL energy in the battery of the phone. This in turn is converted to SOUND energy when the phone rings.
A group of students measured the time taken between seeing
and hearing another student clashing two pieces of wood
together. The distance from the source of sound to the students
was 250m.
After repeating the experiment 5 times, they obtained the
following timings in seconds: 0.73, 0.78, 0.69, 0.81, 0.77.
Use their measurements to calculate the speed of sound.
Why was it advisable for the students to repeat 5 times?
Answers
Answer:
The speed of sound can be gotten by simply finding the average of the results.
=0.756s
It is advisable for the students to repeat 5 times because it allows them to (a) estimate the variability of the results (how close to each other they are) and (b) to increase the accuracy of the estimate.
There are two main types of exercise: (1) exercise, which uses oxygen for energy, and (2) exercise, which does not.
a)
1= anaerobic, 2= aerobic
b)
1= aerobic, 2= anaerobic
Answers
Answer:
b
Explanation:
Answer:
B
Explanation:
1. A uniform magnetic field is directed vertically upwards. In which direction in this field should an alpha particle be projected so that it is deflected south ward? Name and state the rule you have used to find the direction in this case.
Answers
Answer:
1. Fleming's left hand rule
2. It must be projected towards the east
Explanation:
Fleming's left-hand rule states that; When a current-carrying conductor is placed in an external magnetic field, the conductor experiences a force perpendicular to both the field and to the direction of the current flow. This rule was first put forward by John Ambrose Fleming in the later part of the nineteenth century.
Hence if the thumb, fore finger and middle finger of the lefthand are held mutually at right angles to each other; the thumb shows the direction of motion, the fore finger shows the direction of the field while the middle finger shows the direction of the current.
Hence, if the alpha particle is projected eastwards(at right angles) to the uniform magnetic field, it will be deflected southwards in the magnetic field.
An electron is accelerated through a potential difference of 120.0 V, as it enters a uniform magnetic field of 0.400 T that runs perpendicular to the direction of motion of the electron. Determine the radius of the path described by the electron. (6 Marks) m - = 9.11 x 10-$1 kg 4- = -1.60 x 10-1°C us = Ad v= 41 à At Vavg = Vi + Üz 2 HR FN FNET = ma F = mac a = 12 de = r(20f) a=r (9) , = 7, + át så = (***) At Ad = vt + At? så = vrat – zást 0,2 = v?+zaad -b + b2 - 4ac my2 F = r Fe = mr(2mef2 2лв Fe = mr x = 2a W = Fd W = Fcosed E, = magh = Ex = med Em = E, + Ex kx? E = : F = kx p = mv Ft = Ap 1 2 + + mių, + m2 2 = muut + m2 V zm. vt + amev? = m.vn ਉਸ movil та й + тъй, ū= my + m2 m-m m + m2 V + 2m m + 2 mu (m. + m) 2m m2 – m ū, = mi + m2 V + Gm,m2 F = kq192 Fg = r2 G = 6.67 x 10-11 Nm2/kg2 k = 8.99 x 10° Gmplanet g= 2 Fe = qe Gm = ע kaz E = r2 T ΔΕΕ = -φεΔd k9192 Eg = r V = Eg 9 AE =k4.92 ką,936, +) AEE ΔV = F = qvB sin e AV E=- Ad Fon wire = ILB sin e 15 ka V= mv T = qB
Answers
the radius of the path described by the electron is approximately 34 mm.
The centripetal force (F) is provided by the magnetic force (F_mag), which can be calculated using the equation F_mag = qe * v * B, where qe is the charge of the electron, v is its velocity, and B is the magnetic field strength.
The centripetal force is also given by F = (mv^2) / r, where m is the mass of the electron and r is the radius of the path.
By equating these two expressions for the centripetal force, we can solve for the radius (r)
(qe * v * B) = (mv^2) / r
Simplifying, we get r = (mv) / (qe * B).
Given:
Potential difference (ΔV) = 120.0 V
Magnetic field strength (B) = 0.400 T
Charge of the electron (qe) = -1.60 x 10^-19 C
To find the velocity (v) of the electron, we can use the equation ΔV = qe * v, and solve for v.
v = ΔV / qe = 120.0 V / (-1.60 x 10^-19 C) ≈ -7.5 x 10^18 m/s (taking the negative sign to indicate the direction of motion)
Now, we can substitute the values into the formula for the radius:
r = (m * v) / (qe * B) = (9.11 x 10^-31 kg * -7.5 x 10^18 m/s) / (-1.60 x 10^-19 C * 0.400 T)
Calculating the expression, we find:
r ≈ 3.4 x 10^-2 m or 34 mm
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An illustration of a ball sitting at the top of a hill of height labeled h Subscript 1 Baseline = 2 m. A the the bottom of the hill it levels off and the leveled surface is at a height labeled h Subscript 2 Baseline = .5 m. A ball is released from the top of a hill. How fast is the ball going when it reaches the base of the hill? Approximate g as 10 m/s2 and round the answer to the nearest tenth. m/s
Answers
Answer:
5.5 m/s
Explanation:
Right on Edge
The statement explains the importance of enzymes that check for and repair mistakes during DNA replication is the enzymes prevent many genetic mutations from being expressed. Thus, the option C is correct.
What is RNA polymerase?RNA polymerase is an enzyme that aids in the transcription of DNA into RNA during transcript in the nucleus. The enzymes prevent many genetic mutations from being expressed.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it and primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
Therefore, The statement explains the importance of enzymes that check for and repair mistakes during DNA replication is the enzymes prevent many genetic mutations from being expressed. Thus, the option C is correct.
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True or false gravity is a force that can be changed?
Answers
False
Gravity is a type of force that we cannot change. It might be hard to believe that a force like gravity can be subject to whims of the changing seasons, or from shifts and land and water are on the ground.
True, Gravity is a force that can be changed. The strength of the gravitational force between two objects depends on their masses and the distance between them. If either the masses or the distance change, the strength of the gravitational force will change as well.
What are gravitational force?The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them.
For example, the force of gravity between two objects can be changed by altering their masses. Increasing the mass of an object will increase the gravitational force it exerts,
while decreasing the mass will decrease the force.
Similarly, changing the distance between two objects will also change the force of gravity. Increasing the distance between two objects will decrease the force of gravity between them, while decreasing the distance will increase the force.
In addition, the gravitational force can also be changed by the presence of other objects.
For example, the force of gravity on an object on the Earth's surface can be changed by the presence of other planets in the solar system,
which can cause small changes in the gravitational force experienced by the object.
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What is the speed of wave with a wavelength of 4.0 m and a frequency of 11 Hz *?
Answers
speed of wave with a wavelength of 4m and frequency of 11 Hz is 44m/s
wavelength can be defined distance between the 2 successive waves.
wavelength is expressed in m, indicated by Greek letter λ
Frequency can be defined as number of cycles completed in one second.
Frequency is expressed in hertz.
As we know when the wave moves with constant speed, the wavelength of wave is inversely proportional to frequency, hence the formula
speed = frequency X wavelength
we know the formula,
frequency= c/λ
f = frequency = 11 Hz
c = speed of light = ?
λ = wavelength = 4m
put in the formula,
frequency= c/λ
f X λ = c
4 X 11 =c
c = 44m/s.
The speed of wave is 44m/s.
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List two ways that economics relates to the environment
Answers
Answer:
it relates to the economic in these ways
1.unlimited resources
2 wants
Explanation:
human being want resources to provide good and services to satisfy human wants
wants are insatiable desire
A block of mass 200g is oscillating on the end of a horizontal spring of spring constant 100 N/m and natural length 12 cm. When the spring is stretched to a length of 14 cm, what is the acceleration of the block? [F=ma=kx]
Answers
In order to determine the acceleration of the block, use the following formula:
\(F=ma\)Moreover, remind that for an object attached to a spring the magnitude of the force acting over a mass is given by:
\(F=kx\)Then, you have:
\(ma=kx\)by solving for a, you obtain:
\(a=\frac{kx}{m}\)In this case, you have:
k: spring constant = 100N/m
m: mass of the block = 200g = 0.2kg
x: distance related to the equilibrium position = 14cm - 12cm = 2cm = 0.02m
Replace the previous values of the parameters into the expression for a:
\(a=\frac{(\frac{100N}{m})(0.02m)}{0.2\operatorname{kg}}=10\frac{m}{s^2}\)Hence, the acceleration of the block is 10 m/s^2
Oil having a density of 930 kg/m
3
floats on
water. A rectangular block of wood 4.19 cm
high and with a density of 979 kg/m3 floats
partly in the oil and partly in the water. The
oil completely covers the block.
How far below the interface between the
two liquids is the bottom of the block?
Answers
Total 2.54 cm far below the interface between the two liquids is the bottom of the block.
Oil having a density of floats on water = 930 kg/m^3
A rectangular block of wood height = 4.19 cm
A rectangular block of wood having density of floats partly in the oil and partly in the water = 979 kg/m3
We have determine how far below the interface between the two liquids is the bottom of the block.
For the equilibrium:
ρ(wood)gh - ρ(oil)g(h−x) - ρ(water)gx = 0
ρ(wood)h - ρ(oil)(h−x) - ρ(water)x = 0
(974)(3.97) - 928(3.97−x)−1000x = 0
3866.78 - 3684.16 + 928x - 1000x = 0
Simplify
182.62 - 72x = 0
Add 72x on both side we get
72x = 182.62
Divide by 72 on both side, we get
x = 2.54 cm
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The complete question is:
Oil having a density of 930 kg/m^3 floats on water. A rectangular block of wood 4.19 cm high and with a density of 979 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block. How far below the interface between the two liquids is the bottom of the block?
What happens when two polarizers are placed in a straight line, one behind the other?
A. They allow light to pass only if they are polarized in exactly the same direction.
B. They block all light if they are polarized in exactly the same direction.
C. They allow light to pass only if their directions of polarizations are exactly 90° apart.
D. They block all light if their directions of polarizations are exactly 90° apart.
E. They block all light If their directions of polarizations are either exactly the same or exactly 90° apart.
Answers
if you can answer all of these questions, you are a genius.
1. What is matter made of?
2. Define matter.
3. Give 3 examples of things that are made of matter.
4. What is the difference between solid, liquid, and gas?
5. What is a chemical reaction?
6. Explain the difference between the reactants and products.
7. Do you have any plans for Halloween and the break?
Answers
Answer:
1.matter made of mass and volume
2.matter is any substance that has mass and takes up a space by having a volume
3.table, coffee, and perfume
4.solid has a strong bonds, liquid has weak bond, and gas no bond
5
2.
The IMA of an inclined plane 8m long and 2m high is ______.
16
4
2
8
Answers
Answer:
Explanation:
4
The nature-nurture question asks:
A) how can you overcome inherited traits
B) how do groups learn to get along
C) how much like humans are other animals
D) how do your environment and your genes interact to make you who you are
I WILL GIVE BRAINLEST